An illegal immigrant who tutors underprivileged Manhattan kids in math believes yesterday’s immigration deal just doesn’t add up – and said the odds of him leaving the country are zero.

“I wouldn’t go back,” said the 40-year-old mathematician, who came here from his native Senegal in September 2003 and stayed after his tourist visa expired.

He’s been here less than five years and, under the bipartisan Senate agreement, would have to go home and then return as a temporary worker – but he doesn’t believe the promise that he could come back.

“It’s a way for the government to get rid of people,” he said. “I think they’ll just want to forget about you.”

The immigrant, who requested anonymity, was a math teacher in his native land, where he earned a master’s degree. But he left his parents and nine siblings to follow his American dream of earning a doctorate math degree.

For now, he tutors kids at a community center to earn a living – and proudly talks about how he was able to help one teenager who was struggling with math to improve his grades, get through high school and reach college.

The immigrant’s goal is to become a math teacher in New York.

Meanwhile, he says that like other illegal immigrants, he lives “in the shadows,” unable to even open a bank account or get a cellphone.

“The purpose of the immigration reform is to get the people out of the shadows,” he said. “And those who are here less than five years will stay in the shadows.”